149.74% is the change from 390 to 974
Calculation steps:
[( 974 - 390 ) ÷ 390] x 100 = 149.74%
Formula
Percentage change = [(974 - 390) / 390] x 100
Subtract the new number by the original number
974 - 390 = 584
584 ÷ 390 = 1.4974358974358974
1.4974358974358974 x 100 = 149.74%